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Subject: [Bug fortran/54852] New: Bogus(?) warnings when compiling gfortran.dg/bind_c_vars.f90 gfortran.dg/bind_c_vars_driver.c with -flto
Date: Sun, 07 Oct 2012 21:46:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54852

             Bug #: 54852
           Summary: Bogus(?) warnings when compiling
                    gfortran.dg/bind_c_vars.f90
                    gfortran.dg/bind_c_vars_driver.c with -flto
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dominiq@lps.ens.fr


When compiling gfortran.dg/bind_c_vars.f90 gfortran.dg/bind_c_vars_driver.c
with -flto, one gets the following warnings which seem bogus:

[macbook] f90/bug% /opt/gcc/gcc4.8a/bin/gfortran -flto
/opt/gcc/work/gcc/testsuite/gfortran.dg/bind_c_vars.f90
/opt/gcc/work/gcc/testsuite/gfortran.dg/bind_c_vars_driver.c
In file included from
/opt/gcc/work/gcc/testsuite/gfortran.dg/bind_c_vars.f90:16:0,
                 from :0:
/opt/gcc/work/gcc/testsuite/gfortran.dg/bind_c_vars_driver.c:12:5: warning:
type of 'myF90Array2D' does not match original declaration [enabled by default]
 int myF90Array2D[2][3];      /* B in bind_c_vars */
     ^
In file included from :0:0:
/opt/gcc/work/gcc/testsuite/gfortran.dg/bind_c_vars.f90:16:0: note: previously
declared here
   integer(c_int), bind(c, name="myF90Array2D") :: B(3, 2)
 ^
In file included from
/opt/gcc/work/gcc/testsuite/gfortran.dg/bind_c_vars.f90:16:0,
                 from :0:
/opt/gcc/work/gcc/testsuite/gfortran.dg/bind_c_vars_driver.c:11:5: warning:
type of 'myF90Array3D' does not match original declaration [enabled by default]
 int myF90Array3D[10][5][18]; /* A in bind_c_vars */
     ^
In file included from :0:0:
/opt/gcc/work/gcc/testsuite/gfortran.dg/bind_c_vars.f90:15:0: note: previously
declared here
   integer(c_int), bind(c, name="myF90Array3D") :: A(18, 3:7, 10)
 ^

The executable runs fine.